Move wait_for_resource_status()

wait_for_resource_status() is used in DeletableResource only,
and some arguments are not used at all.
So this patch moves the method into DeletableResource and removes
unsed arguments for the cleanup.

Partially implements blueprint consistent-service-method-names

Change-Id: I036822bfd689ed6d2ce23e7c519174cad8db2a7f
2 files changed